diff --git a/golded3/gerand.cpp b/golded3/gerand.cpp
index b7793d3..a5e4164 100644
--- a/golded3/gerand.cpp
+++ b/golded3/gerand.cpp
@@ -34,6 +34,7 @@ char* GetRandomLine(char* __buf, size_t __bufsize, const char* file)
   Path indexfile;
   Path __file;
 
+  strxcpy(__buf, "", __bufsize);
   strxcpy(__file, file, sizeof(Path));
   strschg_environ(__file);